Warper



April M11929 J. w. SIDEBOTTOM 11,77,957

WARPER Filed Aug. 1927 4 Sheets-Sheet 1 Aprill 2, 31929. J. W. SIDEBOTTOM WARPER 4 Sheets- Sheet 2 Filed Aug. 2, 1927 WW7 SAW Z QMO 0J4 y Gr W o April 31929- J. w. SIDEBOTTOM I1,7@7,957

WARPER Filed A g 1927 4 Sheets$heet 5 UQWQMSK April! 2, 1929- .1. W. SIDEBOTTOM WARPER Filed Aug. 1927 4 Sheets-Sheet 4 Patented Apr. 2, 1929.

UNHTED stares v rattan PATENT carton.

JOHN w. SIDEBOTTOM, or nownnn, MASSACHUSETTS, ASSIGNOR To T. o. ENTWISTLE ooaaranir, or nownnn, MASSACHUSETTS, A conronarron' or MASSACHUSETTS.

WARPJER.

Application filed August 2, 1927. serial No. 210,641.

This invention relates to winding mechanism, such, for instance, as that employed in warpers. The features of the invention are intended, more particularly, for use in through frictional contact between the periphery of the drum and the barrel of the said warp-beam or the exterior of the mass of warp-yarns wound thereon. At 7, 7, are

beam-Warpers, although applicable in other retainlng arms such as usually are provided connections also.

An undesirable incident in the running of beam-warpers at high speed has been a tendency of the. receiving warp-beam to jump or bounce away from the surface of the driving drum. W hen such jumping or bouncing occurs it results in the yarn being laid unevenly upon the warp-beam. lln addition, it

occasions objectionable jarring and vibration of the machine, &c. Such tendency to jumping or bouncing has placed a limit upon the rate of speed at which it has been practicable to operate a beam-warper.

The invention consists in improved frictional devices which ll combine with the receiving beam to prevent jumping or bouncing.

In the drawings,

Fig. 1 is an elevation of one end of a beamwarper with the devices of the invention applied thereto, parts not involved in the invention being omitted.

Fig. 2 is a front view of the machine, parts being omitted as in the case of Fig. 1.

Fig. 3 is a view partly in section on line 3, 3, of Fig. 2, looking in the direction of the arrows. i

Fig. 4 is a view in section on line 4, d, of Fig. 1.

Fig. 5 is an enlarged view, chiefly in section on line 5, 5, of Fig. 1, of one set of the frictional devices for keeping the beam in close contact with the driving drum.

Fig. 6 is a view in section on line 6, 6, of Fig. 1, through one set of the said frictional devices.

Fig. 7, sheet 3, is an end elevation or edge view of one of the fixed brackets on which the said frictional devices operate.

Having reference to the drawings The latter show only such parts and elements of a beam-warper of well-known existing type as will serve conveniently to render apparent the relations and nature of the invention. At 1, 1, are the opposite endframes of the machine, and at 2 is the usual drum, located between the said end-frames and journaled in hearings in connection therewith, and serving to rotate the warpreceiving warp-beam 8 (Figs. 1 and 3) in,a beam-warper for retaining the warp beam in working relations with the friction drum 2, the said arms being provided at their outer ends with bearings receiving the journals 23 of the warp-beam, and being hung at their inner ends upon pivotal supports 6, 6, around which they swing freely vertically as the diameter of the mass of yarn wound on the beam-barrel increases progressively in the course of the winding. As will be apparent, in this swinging movement the arms swing in the arc of a circle around the said pivotal supports. lln usual practice, in addition to being arranged to swing vertically, the arms 7, 7, are made movable endwise at the will of the attendant upon the machine, in order that through endwise movement of such arms in one direction a beam which has had a sufficient loadof warp wound thereon may be moved or permitted tomove forward with relation to the drum into more convenient position for disconnection from the arms, or in order to deposit it upon a truck, or skids, or the floor, for removal; and also in order that through endwise movement of the arms in the reverse direction an empty beam may be drawn up upon the friction drum 2 into position for being wound with warp. The drawings show an organization of usual character providing for these movements of the arms lengthwise. Therein, the pivotal supports 6, 6, are carried by arms 29, 29, upon a shaft 28 extending across the machine and journaled in bearings in connection with the sideframes 1, 1. llhe said organization includes a worm-gear 27 (Fig. 1) that is attached to one end of the said shaft 28 alongside one side-frame, and that is engaged by a worm 26 upon a shaft 261 that is journaled in bearings in connection with such side-frame, the said shaft 261 being provided with a crank handle 262. By means of the said crankhandle the shaft 261. and its worm may be rotated manually, to turn the shaft 28 so as to occasion endwise movements of the swinging arms 7, 7, and by such movements providing for the desired shift of the warpbeam engaged with such arms. The drawings show the pivotal supports 6, 6, in their normal position, with the swinging arms 7, 7,

retracted lengthwise into the positions in' which they maintain the warp-beam in proper relation to the friction-drum 2 for the performance of the Winding operation.

For the purpose of preventing the jumping or bouncing aforesaid of the warp-beam 8 away froln the surface of the beam-driving druni 2 during the winding operation, friction-surfaces are provided upon stationary parts of the machine, and with the swinging arms 7, 7, which retain the beam in position relative to the said drum while being wound, are combined brake-shoe devices which move upon such friction-surfaces in curved paths that are concentric with the pivotal centers of the said arms 7, 7, in accompanying the arms as the latter swing.

In this instance the stationary parts upon which the friction-surfaces are provided are segmental brackets 3, 3, that are attached by means of bolts 4, 4, to the end-frames 1, 1, of the machine.

The preferred form of brake-shoe devices comprises, as shown most clearly in Figs. 4, 5, and 6, shoes or plates 13, 14, applied at the opposite faces of each of the stationary segmental brackets 3, 3; means for keeping the said shoes or plates in properly assembled relations; and means for keeping the shoes or plates in close frictional contact with the said opposite faces of each of the brackets. The means for keeping in properly assembled relations the shoes or plates which are'combined with a bracket consists of bolts 16, 16, that pass through holes in the shoes or plates. A head on one.end of each bolt engages with the outer side of the corresponding shoe or plate, in this instance plate 14. An expansion-spring 18 on the portion of each bolt projecting beyond the other shoe or plate, in this instance plate 13, is confined between the latter and a washer 171 backed up by a nut 17 Y screwed upon the thread of such portion of the bolt. The headed bolts, expansionsprings, and nuts, constitute means for keeping'the shoes or plates pressed against the opposite faces of a bracket with an adjustable degree of force. The degree of the pressure, and consequently the degree of frictional checking action incident to movement of the brake-shoe devices upon the said faces, may be regulated by adjustment of the nuts 17, 17.

The brake-shoe devices are combined with the swinging beam-retaining arms 7, 7, in this instance by means of coupling pins 9, 9, which are carried by the brake-shoe devices and are adapted to be engaged with the said arms, or

disengaged therefrom, at will. The pin 9 of each set of brake-shoe devices extends through holes in the shoes or plates of each set, and in use is entered into a hole 11, Figs. 4 and 5, in the corresponding swinging arm 7. Thereby, the said set of brake-shoe devices is coupled to the said arm so that such set must accompany the arm as the latter swings around its pivotal center 6 during the filling of the beam, and in accompanying the arm the shoes or plates travel upon the surfacesof the stationary bracket 3 in a path which is concentric with the pivotal centers 6, 6, of the two arms. The outer end of the coupling pin is furnished with a head or handle 10 by means of which the pin may be manipulated for the purpose of engaging it in the hole in the arm 7, or disengaging it therefrom.

For the conjoint purposes of maintaining the brake-shoe devices in position in the machine and in working relation with the friction surfaces of the brackets 3, 3, and of permitting such devices to accompany the said arms in the swinging movements of the latter, I provide in connection with the sta tionary brackets 3, 3, suitable guides for the brake-shoe devices. In the present instance each of the said brackets is made with a curved slot 5, (Fig. 1), which is occupied by the stems of the corresponding bolts 16, and of the corresponding coupling pin 9. The slots 5, 5, of the two brackets are concentric with the pivotal centers 6, 6 of the swinging arms 7, 7, in the normal position of the said centers. As the wound mass of warp winding upon the warp-beam increases in diameter, raising the swinging arms. the bolts and coupling pins travel upward within the slots 5, 5.

When it is desired to uncouple the brakeshoe devices from the swinging arms 7, 7, the coupling pins 9, 9, are drawn lengthwise out of engagement wit-h the said arms. This uncoupling leaves the arms 7 7, free to be moved outward lengthwise, as for the purpose of dofiing a filled beam. The brake-shoe devices are adapted to be moved downward relative to the stationary brackets 3, 3, into position for re-connection with the arms 7, 7, after an empty warp-beam has been applied to the bearings on said arms and the latter have been returned lengthwise inward to their working position shown in Fig. 1.

For the purpose of preventing the coupling pins 9, 9, from working outward,.out of engagement with arms 7, 7, during the running of the machine, a clamping screw 19, Figs. 1 and 4, is provided in connection with each of the brake-shoes or plates 14, such clamp-- ing screw being adapted to bite against the stem of the corresponding coupling pin.

The brake-shoes or plates 13, 14, have combined therewith wipers 20, 20, of felt, cloth, or other suitable material to wipe lint, etc., from the friction-surfaces of the stationary brackets 3, 3. These wipers, in the illustrated instance, are attached to the said shoes or plates by means of strips of metal 21, 21, Fig. 5, aflixed by means of screws 22, 22, to the tops of the shoes or plates and serving to clamp portions of the said wipers. In practice a small amount of oil is applied to these wipers and through the movements of the shoes or plates relative to the brackets such oil is distributed upon the surfaces of the latter for lubricating purposes.

In this instance the bearings which are provided upon the outer ends of swinging arms 7,7,1'0 receive the journals 23, 23, of the warpbcam 8, have combined therewith cap-blocks 24, 24, Figs. 1 and 3, which slide endwise, trans\-'ersely of the arms, into place between overhanging elevated portions of said bearings, at front and rear thereof, such cap- Cir blocks serving to hold the warp-beam journals down in the bearings. cap-blocks from accidental displacement, each thereof is provided with an upstanding lug 241, and a latch 25 is hinged to the top of the corresponding arm 7. This latch has a slot therein to receive the lug 241, so that the latch may be dropped down over the lug in order to fasten the cap-block against transverse movement relative to the arm 7, or may be lifted and thereby disengaged from the lug to permit the cap-block to be removed.

In some instances l make provision for gradual lessening of the frictional resistance to the rising of the swinging arms 7, 7, in proportion to the increasing diameter and weight of the wound mass. T he tendency to jumping or bouncing of the warp-beam is most pronounced, and the results thereof are most objectionable, during the first part of thewinding of a beam. As the wound mass increases in size, its own weight serves to hold it down in steady running contact with the drum, the tendency to uneven winding is less noticeable, and unevenness of the yarnmass tends to true up. If the brake-shoe devices are allowed to continue to act with full force they may produce too great a degree of pressure of the warps against the surface of the full or nearly full beam. If it is desired to relieve this pressure in proportion as the yarn mass increases, the portions of the brackets 3, 3, adjoining the slots 5 therein may be made tapering in thickness, or slightly wedge-shaped, as shown in Fig. 7, which is an elevation of the edge of a bracket as viewed from the rear. When the brackets are thus tapered the friction devices with any given setting of the friction by means of the thumbnuts 17, 17, will resist upward movement of the arms 7, 7, most strongly at first, but as the wound mass increases in diameter, and the rising arms slide the friction devices upward, the members 13 and 14 will grip less and less tightly upon the tapering thickness of the brackets, until by the time the beam is full the friction devices are exerting little or no holding-down force upon the arms 7 7 When the beam is full, the thumb-screws 19,19, are released and the pins 9,9, are withdrawn manually from engagement with the arms 7, 7, so that dolfing of the heavy beam may be effected through outward longitudinal To prevent the.

movement of the swinging arms 7, 7, occasioned by means of the let-off mechanism comprising the hand-operated worm 26, wormgear 27, shaft 28, and crank-arms 29, 29. When a new warp beam has been installed in the bearings of the arms 7, 7, and after the said arms have been moved longitudinally inward, and after the friction devices have been pushed down within the slots 5, 5, the pins 9, 9, may be restored to their engagement with the arms 7 7, and secured in place, and the winding may begin again.

llhe holes in beam-arms 7, 7, into which the inner ends of coupling pins 9, 9, are entered may extend entirel through the thickness of the said arms, in'w iich case the pins will not prevent the arms from moving laterally, but preferably, in order to hold the said arms from lateral movement, and thereby prevent endwise shift/of the warp-beam during its rotation, the holes extend only part way through, and the said pins bottom against the closed inner ends of the holes, as in Fig. 4. By preventing endwise movement of the warp-beam, gripping action of the beam fianges against the ends of the friction drum is prevented. This combination of blocks, or plates, moving on fixed guides, and pins carried by said blocks, or plates, locked against endwise movement relative thereto, and engaging with the beam arms to prevent movement of the beam endwise with relation to the friction drum, may be utilized to advantage in cases in which friction is not utilized for the purpose of preventing bouncing of the warp-beam relative to the drum.

The drawings show in addition to the frictional devices aforesaid certain measuring mechanism and stop mechanism, the elements of which are designated by reference characters from 31 to 71. The said mechanisms form no part of the invention that is claimed herein, and accordingly they are not described herein. Such mechanisms constitute the sub j ect of my divisional application filed Feb. 23, 1928, Serial No. 256,149.

What is claimed as the invention is 1. In a warper having a driving drum, swinging arms which retain the warp-beam in position relative to the said drum while being wound, and means providing for move ment of said arms lengthwise for the purpose of dotting a filled beam and ofplacing an empty one in winding relations with the drum, the combination therewith of brakeshoe devices, means for detachably engaging the same with the said arms in the working position of the latter, stationary guiding means for said brake-shoe devices by which the latter are held when the arms are shifted lengthwise, and surfaces with which said brake-shoe devices engage frictionally along curved paths concentric with the normal position of the pivotal axis of the swinging arms.

v 2. In a warper, the combination with a driving drum, and swinging arms which retain the warp-beam in positionrelative to the said drum while being wound, of means for preventing jumping of the beam comprising stationary parts of the machine having friction surfaces which are concentric with the normal positions of the pivotal supports of the swinging arms, and brake-shoe devices which in operation are connected. with the arms and in slidable frictional engagement with the said concentric friction surfaces.

3. In a warper, the combination with a beam-actuating drum, and a swinging arm which retains a warp-beam in working relations with the drum while being wound, of a fixed part having a slot concentric with the pivotal axis of the swinging arm, a frictionshoe device comprising elements which engage frictionally opposite faces of such fixed part, a plurality of bolts passing through said elements against the said faces of the fixed part, and a pin extending through the slot and slidable through said elements into readily detachable engagement with the swinging arm to cause the friction device to follow the movement of the swinging arm as the warp-beam fills.

4. In a warper, the combination with a beam-actuating drum, and swinging arms which retain the warp-beam in position relative to said drum while being wound, of adjustable friction-producing means to prevent jumping of the beam, said friction-producing means adapted to diminish the resistance to jumping movement of the arms away from the drum progressively as the beam fills.

5. ln a warper, the combination with a driving drum and swinging arms which retain a Warp-beam in position relative to the said drum while being wound, of frictional means co-operating with sliding friction with the said arms for preventing jumping of the beam.

6. In a beam-warper, the combination with a drum which imparts winding rotation to a receiving beam through frictional surface: contact, and swinging arms engaging with the beam-journals to retain the beam in driving relations with the drum-periphery during the filling of the beam, of shoes or plates guided to permit movement thereof in unison with the swinging movement of the arms but prevented from movementin the direction of the length of the drum, and means for detachably engaging the said shoes or plates and the arms together in a manner preventing movement of the arms and receiving beam in the said direction.

7. In a beam-warper, the combination with a drum which imparts winding rotation to a recelving beam through frictional surfacecontact, and swinging arms engaging with the beam-journals to retain the beam in driving relations with the drum-periphery during the filling of the beam, of shoes or plates guided to permit movement thereof in unison with the swinging movement of the arms but prevented from movement in the direction of the length of the drum, pins combined with the said shoes or plates in manner providing for endwise movement of the pins into and out of engagement with the arms, and means for locking the pins from endwise movement relative to the shoes or plates, said pins when thus locked operatin to prevent endwise shift of the receiving ieam.

8. ltn a warper, the combination with a beam-actuatin drum, a swinging arm which retains a warpcam in working relations with the said drum while being wound, africtionsegment concentric with the pivotal axis of the said arm, and a friction-shoe device en gaging with the said friction-segment, one of said friction-elements movable relative to the other concentrically with relation to the pivotal axis around which said arm swings, as the beam fills, of a freely-operable manually controlled latching device whereby the relatively-movable friction-element may be connected with the swinging arm, and at will may be disconnected therefrom to permit independent movement of the arm.

9. In a warper, the combination with a driving-drum, and swinging arms which retain the warp-beam in position relative to said drum while being wound, of adjustable friction-producing means to resist the movement of said arms away from the axis of the driving-drum asthe warp-beam fills, comprising a fixed bracket on the machine frame and a brake-shoe in slidable frictional engagement with such bracket, the brake-shoe being combined with the swinging arms with capacity for ready manual detachment to permit longitudinal movement of the said arms in dofing the warp-beam.

JUHN W. SlllDlEBO'llTOM.

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